If a person is a member of the Board or a legally authorized agent of the Board and is investigating, prosecuting, participating in a hearing, or otherwise acting on an allegation of a ground for Board action made to the Board, the person shall have the immunity from liability described under § 5–715(b) of the Courts and Judicial Proceedings Article. A person who makes an allegation of a ground for Board action to the Board shall have the immunity from liability described under § 5–715(c) of the Courts and Judicial Proceedings Article.